So bottom line here there are 2 things that pick a cam for optimal performance where you care about (low torque or high rpm), the overlap and the the LCA. Once you choose those two for your engine the duration just falls out (with a symmetrical lobe). These numbers are defined through the cubic inches of the motor, valve size and a few other things. If you run through the math for a oversized valve 225 here is what falls out:
Torque Cam - 21 degree of overlap (The RV, OCG 2106)
Street Cam - 44 degrees of overlap ( Comp Cam, OCG 819)
Strip Cam - 59 degrees of overlap
Crazy Cam - 101 degrees of overlap
Then if you do the math for LCA using compression ratios in the 8.5-9.5 range and valve area to cylinder cubic inches
107 LCA for stock valves
108 LCA for oversized valves
you can't get enough valve to cylinder ratio in a 225 to utilize a higher LCA. So if you take the cam you are thinking about using and put it in a cam calculator that will tell you the overlap then you can compare it to this and decide what class it fall in.
